mathjs/lib/utils/collection/isMatrix.js

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser with support for symbolic computation, comes with a large set of built-in functions and constants, and offers an integrated solution to work with dif

'use strict';
/**
 * Test whether a value is a Matrix
 * @param {*} x
 * @returns {boolean} returns true with input is a Matrix
 *                    (like a DenseMatrix or SparseMatrix)
 */

module.exports = function isMatrix(x) {
  return x && x.constructor.prototype.isMatrix || false;
};